87938-63-4Relevant articles and documents
Reversal of Anti to Syn Diastereoselectivity in Crotyltitanation Reaction
Szymoniak, Jan,Thery, Nadine,Mo?se, Claude
, p. 1239 - 1240 (1997)
η3-2-Methylcrotyl(tiglyl)titanocene reacts with aldehydes to afford anti homoallylic alcohols when the reaction is carried out in THF, and preferentially syn products when the solvent is HMPA/THF=3:1. This simple control of anti versus syn dias
Ni- and pd-catalyzed synthesis of substituted and functionalized allylic boronates
Zhang, Ping,Roundtree, Ian A.,Morken, James P.
, p. 1416 - 1419 (2012/06/01)
Two highly efficient and convenient methods for the synthesis of functionalized and substituted allylic boronates are described. In one procedure, readily available allylic acetates are converted to allylic boronates catalyzed by Ni/PCy3 or Ni/PPh3 complexes with high levels of stereoselectivity and in good yields. Alternatively, the borylation can be accomplished with commercially available Pd catalysts [e.g., Pd 2(dba)3, PdCl2, Pd/C], starting with easily accessed allylic halides.
Unique regio- and stereoselectivity in the allylation of benzaldehyde with 2-substituted allylzincs generated by umpolung of π-allylpalladium
Shimizu, Masamichi,Kimura, Masanari,Tanaka, Shuji,Tamaru, Yoshinao
, p. 609 - 612 (2007/10/03)
α,β-Disubstituted allylzincs with alkoxycarbonyl as the β-substituent, generated via an umpolung of in situ generated π-allylpalladium by transmetallation with diethylzinc, react with benzaldehyde at the most substituted allylic terminus to provide syn-γ-
